What's an effective way for me to lose belly fat and fat rolls?

There's no such . Thing as natural spot fat loss. You need to lose weight in general & a certain % will be abdominal fat. Eat healthfully & be physically active. Calories burned must > calories consumed. To tighten ab's do crunches, reverse crunches, exercise ball crunches, pelvic thrusts, lying leg raises, side bridge & “bicycling” exercise on your back. Engage in regular aerobic exercise.
The only. Way to through diet and exercise. It will help lose total body fat; you can't directs it at your belly fat, but you can strengthen the abdominal muscles through directed exercise. It's 3500 calories that you must burn off to lose one pound. Otherwise the only way is liposuction.